Gate valve



FIG. 1 is a perspective view of the gate valve showing our new design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a back elevational view thereof;

FIG. 4 is a left side elevational view thereof, the right sideelevational view being substantially a mirror image of the left sideelevational view;

FIG. 5 is a top plan view thereof; and,

FIG. 6 is a bottom plan view thereof.

The components shown in broken lines are for illustrative purposes onlyand form no part of the claimed design.

The ornamental design for a gate valve, as shown and described.